JPS61265135A - Incision instrument for surgery - Google Patents

Incision instrument for surgery

Info

Publication number
JPS61265135A
JPS61265135A JP60110012A JP11001285A JPS61265135A JP S61265135 A JPS61265135 A JP S61265135A JP 60110012 A JP60110012 A JP 60110012A JP 11001285 A JP11001285 A JP 11001285A JP S61265135 A JPS61265135 A JP S61265135A
Authority
JP
Japan
Prior art keywords
outer tube
blade
tissue
needle
tip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP60110012A
Other languages
Japanese (ja)
Other versions
JPH0557862B2 (en
Inventor
楠　博幸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP60110012A priority Critical patent/JPS61265135A/en
Publication of JPS61265135A publication Critical patent/JPS61265135A/en
Publication of JPH0557862B2 publication Critical patent/JPH0557862B2/ja
Granted legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B17/295—Forceps for use in minimally invasive surgery combined with cutting implements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/3205—Excision instruments
    • A61B17/32053—Punch like cutting instruments, e.g. using a cylindrical or oval knife
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B2017/320064—Surgical cutting instruments with tissue or sample retaining means

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Ophthalmology & Optometry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 ［発明の技術分野］ 本発明は、例えば膝等の関節腔内における軟骨。[Detailed description of the invention] [Technical field of invention] The present invention relates to cartilage in a joint cavity such as a knee.

！ｌＨ性１織或いは腫瘍等を効率良く切除可能とする外
科用切除器具に関する。! The present invention relates to a surgical resection instrument capable of efficiently resecting IH tissue, tumors, etc.

［従来の技術］ 数十年前から人体の関節は目視深層、つまり内視鏡を挿
入すれば目視できることは知られていたが、関節手術は
主として切開法で行われていた。[Prior Art] It has been known for several decades that the joints of the human body can be visually inspected by deep observation, that is, by inserting an endoscope, but joint surgery has mainly been performed by an incisional method.

例えば、代表的な関節の手術は、膝蓋骨上の腫瘍を除去
したり、膝関節から破損した軟骨等を切除すること等で
あるが、大きな切開を必要としていた。このため、切開
による外傷、苦痛等がなくなる程度まで直るのに多くの
時間を要するという欠点を有していた。For example, typical joint surgeries require large incisions, such as removing tumors on the patella or cutting damaged cartilage from the knee joint. For this reason, it has the disadvantage that it takes a lot of time to heal to the point where the trauma, pain, etc. caused by the incision are eliminated.

又、関節腔内の半月等の軟骨を切除しなければならない
場合のように、狭い腔内での組織の切除ということは、
大きく切開しなければ殆んど行うことができなかった。In addition, when tissue is removed within a narrow cavity, such as when cartilage such as a meniscus within a joint cavity must be removed,
Almost nothing could be done without making a large incision.

このため、近年、関節鏡の観察のもとで、切開しないで
、小さな穿刺孔を形成し、該穿刺孔に挿入されたプロー
ブを使用して手術する外科用切除器具が種々提案されて
いる。例えば、特開昭５９−１８６５４８号に開示され
ている従来例は、例えば、膝関節内の破損した関節半月
、腫瘍等を切除するための切除器具として中空の挿入部
の先端側にカップ状で対向する２つの刃を設け、その一
方を開閉可能な開閉刃にすると共に、該開閉刃の刃先に
逃げを防止する突出部を設け、且つ手元側に切除した組
織片等を吸引して排出可能とする手段を設けている。For this reason, in recent years, various surgical resection instruments have been proposed that form a small puncture hole without making an incision under arthroscopic observation and perform surgery using a probe inserted into the puncture hole. For example, in the conventional example disclosed in Japanese Patent Application Laid-open No. 186548/1984, a cup-shaped resection instrument is used to remove a damaged meniscus, tumor, etc. in a knee joint. It has two opposing blades, one of which can be opened and closed, and the tip of the opening and closing blade has a protrusion that prevents it from escaping, and it is also capable of suctioning and discharging excised tissue pieces on the proximal side. We have established means to do so.

［発明が解決しようとする問題点］ 上記従来例では、切除対象となる関節肉組織が弾力的で
粘性を持っているので、切除の際、組織への食い（＝ｌ
きが十分でなく、組織の逃げも発生し、効率の良い切除
が行えない不都合が発生する場合があった。[Problems to be Solved by the Invention] In the above-mentioned conventional example, since the joint flesh tissue to be resected is elastic and viscous, there is a tendency for the tissue to be bitten (=l) during resection.
In some cases, the removal of the tissue was not sufficient, and tissue escape occurred, resulting in the inconvenience that efficient resection could not be performed.

本発明は上述した点にかんがみてなされたもので、例え
ば膝関節体腔内における軟骨、腫瘍等の切除されるべき
ｆ１織への食い伺きが良好で、組織の逃げを防止して効
率良く切除できる外科用切除器具を提供することを目的
とする。The present invention has been made in view of the above-mentioned points, and has good access to the f1 tissue to be resected, such as cartilage and tumor in the body cavity of the knee joint, thereby preventing the escape of the tissue and efficiently resecting it. The purpose of the present invention is to provide a surgical resection instrument that can be used.

［問題点を解決するための手段及び作用］この器具では
、細長の外管４内に内管５を挿通し、この内管５の先端
側に互いに拡間するよう付勢されて分岐され、各先端に
切除用の刃部８を設（プた針刃７，７を形成し、■つ外
管４の先端周縁に切除用の刃部６を形成し、前記外管４
に対し、内管５を前後動させることによって、複数の針
刃８．８を開閉して組織を把持し、切除すると共に、外
管４の先端の刃部６によっても組織を切除できる。[Means and operations for solving the problem] In this instrument, an inner tube 5 is inserted into an elongated outer tube 4, and the inner tube 5 is biased to expand toward the distal end side of the inner tube 5 and branched. A cutting blade part 8 is provided at each tip (the needle blades 7, 7 are formed), and a cutting blade part 6 is formed at the tip periphery of the outer tube 4, and the outer tube 4 is
On the other hand, by moving the inner tube 5 back and forth, the plurality of needle blades 8.8 can be opened and closed to grasp and cut tissue, and the tissue can also be cut by the blade portion 6 at the tip of the outer tube 4.

［実施例］ 以下、図面を参照して本発明を具体的に説明する。[Example] Hereinafter, the present invention will be specifically described with reference to the drawings.

第１図ないし第５図は本発明の第１実施例に係り、第１
図は第１実施例の全体を示し、第２図は挿入部先端側の
縦断面図で刃が突出した状態、第３図は刃を引き込んだ
状態、第４図は第３図の符号へ方向から見た矢視図、第
５図は第１実施例の使用例を示す。FIGS. 1 to 5 relate to the first embodiment of the present invention.
The figure shows the whole of the first embodiment, Figure 2 is a longitudinal sectional view of the distal end of the insertion part with the blade protruding, Figure 3 is the blade retracted, and Figure 4 is the reference number in Figure 3. FIG. 5, which is a view in the direction of arrows, shows an example of the use of the first embodiment.

第１図に示すように第１実施例の外科用切除器具１は手
元側の操作部２と、この操作部から前方へ延設されて体
腔内、例えば関節腔内へ挿入される細長の挿入部３とか
ら構成される。前記挿入部３は基部を操作部２に固定し
た外管４と、この外管４内に軸方向に摺動自在に内装さ
れた内管５から成り、外管４の先端には周縁に鋭く尖っ
た刃を設けた外管刃部６が形成されている。又、内管５
は、第２図又は第３図に示すようにその先端側に、例え
ば上下方向に１対の針刃７，７が内管５の軸方向に分岐
形成され、これら針刃７，７の先端側が拡間するように
イ寸吻しである。しかして各針刃７の先端には鋭く尖っ
た針刃部８がそれぞれ形成されている。これら針刃部８
．８は、前方に突出する１対の針刃７，７に対して、略
９０°に近い角度で対向する内側に突出させてあり、弾
力性を有する組織に対しても食い付きが良好で、組織の
逃げを十分防止できるように形成してあり、針刃部８．
８を閉じることによって、切除できるようにしである。As shown in FIG. 1, the surgical resection instrument 1 of the first embodiment includes an operating section 2 on the proximal side, and an elongated inserter extending forward from the operating section and inserted into a body cavity, for example, a joint cavity. It consists of part 3. The insertion section 3 consists of an outer tube 4 whose base is fixed to the operating section 2, and an inner tube 5 that is slidably inserted in the outer tube 4 in the axial direction. An outer tube blade portion 6 is formed with a sharp blade. Also, the inner pipe 5
As shown in FIG. 2 or 3, a pair of needle blades 7, 7 are formed on the distal end side, for example, in the vertical direction, and are branched in the axial direction of the inner tube 5, and the tips of these needle blades 7, 7 It has a long nose so that the sides widen. Thus, a sharp needle blade portion 8 is formed at the tip of each needle blade 7. These needle blade parts 8
．． 8 is protruded inwardly facing the pair of needle blades 7, 7 protruding forward at an angle close to approximately 90°, and has good bite even on elastic tissue. The needle blade portion 8 is formed to sufficiently prevent tissue escape.
By closing 8, it can be removed.

又、上記外管４の先端に、外管刃部６を設けることによ
って、上記針刃部８，８で把持した状態の組織を、外管
刃部６によっても切除できるようにしである。Furthermore, by providing the outer tube blade section 6 at the tip of the outer tube 4, the tissue gripped by the needle blade sections 8, 8 can also be resected by the outer tube blade section 6.

上記内管５の中空管路は切片吸引路９として利用される
ためのもので、先端側から操作部２側の吸引口金１０に
連通し、この吸引口金１０に接続される吸引手段にて切
片吸引路９内の切除された切片を吸引して排除できるよ
うにしである。The hollow pipe path of the inner tube 5 is used as a section suction path 9, and communicates from the distal end side to a suction mouthpiece 10 on the operating section 2 side, and is connected to the suction means connected to this suction mouthpiece 10. This allows the excised section in the section suction path 9 to be suctioned and removed.

上記外管４操作部側端部（手元側端部）は、固−５一 定ハンドル１１に固着され、一方、内管５の操作部側端
部は、駆動ハンドル１２に接続してあり、これら固定ハ
ンドル１１及び駆動ハンドル１２は枢支部１３にて一方
のハンドル１１に対し、他方のハンドル１２が適宜角度
にねたり回動できるようにしである。従って、操作する
者は、固定ハンドル１１の下端にループ状に設（プた指
掛り１４ど、駆動ハンドル１２の下端に設けた指掛け１
５に指を入れて、第１図に示す状態から矢印Ｂで示すよ
うに指掛け１４．１５を閉じるように回動させると、第
１図又は第２図に示すように外管４の先端から突出する
状態であった針刃７，７は、内管５が外管４内を後方に
摺動するのに伴って、外管刃部６側に退避し、両指掛け
１４．１５を閉じた状態では、挿入部３の先端側は第２
図に示す状態から第３図に示す状態になるようにしであ
る。この場合第３図のへ方向から見た図は第４図に示す
ようになる。尚、内管５におりるハンドル１２との接続
部は、例えば内管５外周の２箇所にピン１６゜１６（第
１図では一方のみ示す）を突設し、一方ハンドル１２側
には、各ビン１６を係入する孔が形成されている。８孔
は、枢支部１３方向に若干長孔となる形状にしである。The operating section side end (proximal end) of the outer tube 4 is fixed to a fixed handle 11, while the operating section side end of the inner tube 5 is connected to a drive handle 12. The fixed handle 11 and the drive handle 12 are arranged at a pivot point 13 so that the other handle 12 can be twisted or rotated at an appropriate angle with respect to one handle 11. Therefore, the operator can install a loop-shaped finger rest 14 on the lower end of the fixed handle 11, a finger rest 14 on the lower end of the drive handle 12, etc.
5 and rotate the finger hook 14.15 to close it as shown by the arrow B from the state shown in FIG. 1, and as shown in FIG. The needle blades 7, 7, which were in a protruding state, retreated to the outer tube blade part 6 side as the inner tube 5 slid backward inside the outer tube 4, and both finger hooks 14 and 15 were closed. In this state, the distal end side of the insertion section 3 is
The state shown in the figure is changed to the state shown in FIG. 3. In this case, the view of FIG. 3 viewed from the opposite direction becomes as shown in FIG. 4. The connection part between the inner tube 5 and the handle 12 is provided by protruding pins 16° 16 (only one is shown in FIG. 1) at two locations on the outer periphery of the inner tube 5, while on the handle 12 side, A hole is formed into which each bottle 16 is inserted. The 8 holes are shaped to be slightly elongated in the direction of the pivot portion 13.

このＪｚうに構成された第１実施例の動作を以下に説明
する。The operation of the first embodiment configured in this manner will be described below.

第５図に示すように目的とする部位、例えば膝関節内で
半月等の切除を行う場合、膝部に第１実施例の先端側を
挿入できる小孔をトラカール等の穿刺操作等によって設
け、挿入部３先端側を挿入する。この場合、ハンドル１
１．１２を互いに引きよせて、針刃７を閉じた第３図に
示す状態で挿入する。As shown in FIG. 5, when resecting a target region such as a meniscus within the knee joint, a small hole into which the distal end of the first embodiment can be inserted is made in the knee by puncturing with a trocar or the like. Insert the distal end of the insertion section 3. In this case, handle 1
1. Pull the needles 12 toward each other and insert the needle blade 7 in the closed state shown in FIG. 3.

又、上記第１実施例の目的部位への挿入及び目的部位の
切除を観察しながら行えるように、関節鏡２１の照明及
び観察光学系が配設された関節鏡挿入部２２をトラカー
ル等の穿刺操作によって導入し、関節鏡２１の接眼部に
眼を近接して、又は装着したテレビカメラ２３によって
、撮影した映像を表示装置４６の画面に関節腔内の様子
及び第１実施例の先端を観察できる状態にする。In addition, in order to perform insertion into the target site and resection of the target site in the first embodiment while observing, the arthroscope insertion section 22, which is equipped with the illumination and observation optical system of the arthroscope 21, is inserted through a puncture such as a trocar. The image is displayed on the screen of the display device 46 by bringing the eye close to the eyepiece of the arthroscope 21 or by using the attached television camera 23, and displays the inside of the joint cavity and the tip of the first embodiment. Make it observable.

さらに、生理的食塩水を制御された水圧で、給水源２５
から穿刺した給水管２６を経て関節内に供給できる状態
する。又、吸引口金１０にはチューブを介して吸引装置
２７に接続する。Furthermore, physiological saline is supplied to the water supply source 25 at controlled water pressure.
The water can be supplied into the joint through the water supply pipe 26 punctured from the duct. Further, the suction mouthpiece 10 is connected to a suction device 27 via a tube.

このように設定した状態で、照明光源３１の照明光によ
って関節鏡２１の挿入部２２内を挿通されたライトガイ
ドを経て照明された関節腔内を術者は表示装置２４で観
察しながら、第１実施例の外科用切除器具１の先端側を
脛骨３２と大腿骨３３との間の狭い関節腔内に挿入し、
その内側にある切除部位となる半月部位等に先端刃先部
を近接ないしは当接させる。（第５図においては、膝部
の一部を切欠いて示しであるａ）。With these settings, the operator uses the display device 24 to observe the interior of the joint cavity, which is illuminated by the illumination light from the illumination light source 31 through the light guide inserted through the insertion section 22 of the arthroscope 21. Insert the distal end side of the surgical resection instrument 1 of the first embodiment into the narrow joint space between the tibia 32 and the femur 33,
The tip of the cutting edge is brought close to or in contact with a crescentic region or the like that will be the resection region on the inside. (In Fig. 5, a part of the knee part is cut away).

しかして、ハンドル１１．１２を開き、針刃７゜７を開
き、切除部位をその開いた針刃７．７先端の針刃部８．
８で把持し、この状態で指掛け１４゜１５を閉じるハン
ドル操作をすると、外管４に対し、相対的に内管５が後
方に移動して、針刃７゜７の先端の針刃部８，８の間隔
が小さくなり、該針刃部８．８に当接する部分の組織が
切除されたり、組織に針刃部８．８が食い込んでいく。Then, the handle 11.12 is opened, the needle blade 7.7 is opened, and the resection site is placed in the needle blade section 8.7 at the tip of the opened needle blade 7.7.
8, and when the handle is operated to close the finger hooks 14 and 15 in this state, the inner tube 5 moves rearward relative to the outer tube 4, and the needle blade part 8 at the tip of the needle blade 7 and 7 moves backward relative to the outer tube 4. , 8 becomes smaller, and the tissue in the portion that comes into contact with the needle blade 8.8 is excised or the needle blade 8.8 digs into the tissue.

又、このハンドル操作によって、針刃７，７は外管４内
側に順次収納されていくことになり、この際針刃部８，
８で食い込み把持された組織の先端側く切除器具側から
言えば外管４に近い方）は外管４先端に形成された外管
刃部６に嶌接し、切除されることになる。Also, by operating this handle, the needle blades 7, 7 are sequentially stored inside the outer tube 4, and at this time, the needle blades 8,
The distal end side of the tissue bitten and grasped by the cutter 8 (the side closer to the outer tube 4 from the cutting instrument side) comes into contact with the outer tube blade portion 6 formed at the tip of the outer tube 4, and is resected.

このようにして、ハンドル１１．１２を閉じると、針刃
部８．８は第３図に示すように、その先端が閉じた状態
になり、この状態になると、切除部位は切除されて組織
片として断力７，７内側に収納される。手元側には吸引
装置２７が接続されているので、潅流液と共に切片吸引
路９を通り、吸引装置２７に吸引され、排出口等から排
出される。In this way, when the handle 11.12 is closed, the needle blade 8.8 is in the closed state at its tip, as shown in FIG. The shear forces 7, 7 are stored inside. Since a suction device 27 is connected to the proximal side, the perfusion fluid passes through the section suction path 9, is sucked into the suction device 27, and is discharged from a discharge port or the like.

このように動作する第１実施例によれば、切除すべき部
位が例えば軟骨（関節半月、関節軟骨）等の弾力性を有
する組織あるいは腫瘍等の組織であっても、針刃７，７
の先端の針刃部８．８で逃げを防止し、ハンドル操作で
簡単、且つ効率良く切除できると共に、切除された組織
片は、吸引手段により手元側に移送されるので、迅速且
つ短時間で切除による治療処置を終えることができる。According to the first embodiment that operates in this manner, even if the site to be resected is elastic tissue such as cartilage (articular meniscus, articular cartilage) or tissue such as a tumor, the needle blades 7, 7
The needle blade part 8.8 at the tip of the needle prevents escape and allows easy and efficient resection by operating the handle, and the resected tissue piece is transferred to the proximal side by suction means, so it can be removed quickly and in a short time. The therapeutic procedure can be completed by excision.

第６図は、本発明の第２実施例の外科用切除器具４１を
示す。FIG. 6 shows a second embodiment of a surgical cutting instrument 41 of the present invention.

この第２実施例は、外管４を回動する構造にしである。This second embodiment has a structure in which the outer tube 4 is rotated.

第７図に拡大して示すように、外管４の手元側を段部状
に拡径にした拡径部４２を形成し、固定ハンドル１１の
上端側に設置プた筒状の外管接続部材４３に回動自在に
外装されている。この拡径部４２には、螺旋状又は斜め
に漢を形成したウオームホイール４４が固着しである。As shown in an enlarged view in FIG. 7, a cylindrical outer tube connection is formed by forming an enlarged diameter portion 42 in which the proximal side of the outer tube 4 is enlarged in diameter in a step-like manner, and is installed on the upper end side of the fixed handle 11. It is rotatably mounted on the member 43. A worm wheel 44 having a spiral or diagonal shape is fixed to this enlarged diameter portion 42 .

一方、このウオームホイール４４に係合するウオーム４
５が挿入部３の軸方向に延設してあり、このウオーム４
５を前後動させると、ウオームホイール４４は回動され
るようにしである。このウオーム４５は例えば後端側を
１字状に屈曲さ往て、内管５に固定しである。On the other hand, the worm 4 that engages with this worm wheel 44
5 extends in the axial direction of the insertion section 3, and this worm 4
When the worm wheel 5 is moved back and forth, the worm wheel 44 is rotated. The worm 45 is fixed to the inner tube 5 by, for example, bending the rear end side in a straight line shape.

尚、外管４を回動させた場合、外れないように大径部４
２にはピン４６を突設し、このピン４６は接続部材４３
の周溝に嵌入させである。In addition, when the outer tube 4 is rotated, the large diameter portion 4 should be
2 has a protruding pin 46, and this pin 46 connects to the connecting member 43.
It is fitted into the circumferential groove.

その他は上記第１実施例と同様である。The rest is the same as the first embodiment.

この第２実施例によれば、ハンドル１１．１２を回動す
ると、内管５が外管４に対して相対的に移動し、この際
ウオーム７１５が共に移動するため、このウオーム４５
に係合するつＡ−ムホイール４４が回転駆動される。従
って、針刃部８，８で把持した組織は、回動する外管刃
部６で切除されることになる。According to this second embodiment, when the handle 11 .
The arm wheel 44, which is engaged with the arm wheel 44, is driven to rotate. Therefore, the tissue gripped by the needle blades 8, 8 is resected by the rotating outer tube blade 6.

この第２実施例によれば、外管刃部６での切除機能を増
大できる。According to this second embodiment, the cutting function of the outer tube blade portion 6 can be increased.

尚、ウオームホイール４４に対向して形成されたウオー
ム４５の位置を例えば第７図における左側位置の一部の
みに形成する等することによって、内管５が適宜移動さ
れた場合にのみ回動させるようにすることもできる。In addition, by forming the worm 45 formed opposite to the worm wheel 44 only in a part of the left position in FIG. 7, for example, the worm 45 is rotated only when the inner tube 5 is moved appropriately. You can also do it like this.

尚、上記各実施例では、針刃は２枚（２個）で形成され
ているが３個以上で形成することもできる。又、外管４
の先端周縁に形成した刃部としては図示のものに限らず
、例えば挿入部３の軸方向にスーツ１〜状の切欠きを形
成し、且つこの切欠き縁部を鋭くして刃部を形成し、回
転の際に組織を切除し易くすることもできる。In each of the above embodiments, the needle blade is formed of two pieces (two pieces), but it can also be formed with three or more pieces. Also, outer tube 4
The blade portion formed on the periphery of the distal end is not limited to the one shown in the figure, but for example, a suit 1-shaped notch is formed in the axial direction of the insertion portion 3, and the edge of this notch is sharpened to form the blade portion. However, it can also make it easier to remove tissue during rotation.

［発明の効果］ 弾力性を有する軟骨その他の組織への食い付きが良好で
、逃げを防止して効率良く切除できる。[Effects of the Invention] It has good grip on elastic cartilage and other tissues, prevents escape, and enables efficient resection.

【図面の簡単な説明】[Brief explanation of drawings]

第１図ないし第５図は本発明の第１実施例に係り、第１
図は第１実施例の全体を示す側面図、第２図は針刃を突
出させて開いた状態での挿入部先端側を示す縦断面図、
第３図は針刃を閉じ、外管内に退避させた状態での挿入
部先端側を示す縦断面図、第４図は第３図の矢印へ方向
から見た挿入部先端を示す正面図、第５図は第１実施例
の使用状態を示す説明図、第６図は本発明の第２実施例
を示す側面図、第７図は外管の手元側部分を拡大して示
す縦断面図である。 １．４１・・・外科用切除器具FIGS. 1 to 5 relate to the first embodiment of the present invention.
The figure is a side view showing the whole of the first embodiment, FIG.
FIG. 3 is a longitudinal sectional view showing the distal end of the insertion section with the needle blade closed and retracted into the outer tube; FIG. 4 is a front view showing the distal end of the insertion section as seen from the direction of the arrow in FIG. 3; Fig. 5 is an explanatory diagram showing the usage state of the first embodiment, Fig. 6 is a side view showing the second embodiment of the present invention, and Fig. 7 is a longitudinal sectional view showing an enlarged proximal portion of the outer tube. It is. 1.41 Surgical cutting instruments

Claims (1)

【特許請求の範囲】[Claims] 細長の外管内を挿通された内管の先端側に分岐されて互
いに開拡するよう付勢され、先端に鋭い刃部を設けた鍵
刃を設け、該鍵刃を外管先端から進退自在に形成して前
記鍵刃を開閉可能にすると共に、外管先端の周縁に刃部
を設けたことを特徴とする外科用切除器具。A key blade is provided at the distal end side of the inner tube inserted through the elongated outer tube, which is biased to open and expand each other, and has a sharp blade at the tip, and the key blade can be moved forward and backward from the tip of the outer tube. A surgical cutting instrument characterized in that the key blade is formed so that the key blade can be opened and closed, and a blade portion is provided on the periphery of the distal end of the outer tube.
JP60110012A 1985-05-21 1985-05-21 Incision instrument for surgery Granted JPS61265135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60110012A JPS61265135A (en) 1985-05-21 1985-05-21 Incision instrument for surgery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60110012A JPS61265135A (en) 1985-05-21 1985-05-21 Incision instrument for surgery

Publications (2)

Publication Number Publication Date
JPS61265135A true JPS61265135A (en) 1986-11-22
JPH0557862B2 JPH0557862B2 (en) 1993-08-25

Family

ID=14524879

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60110012A Granted JPS61265135A (en) 1985-05-21 1985-05-21 Incision instrument for surgery

Country Status (1)

Country Link
JP (1) JPS61265135A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018098187A1 (en) 2016-11-23 2018-05-31 Corit Llc Apparatus and methods for tissue reduction
WO2018189774A1 (en) * 2017-04-10 2018-10-18 オリンパス株式会社 Medical system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3530895B2 (en) * 1996-06-18 2004-05-24 日清丸紅飼料株式会社 Ovariectomy device for mammals

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018098187A1 (en) 2016-11-23 2018-05-31 Corit Llc Apparatus and methods for tissue reduction
EP3518783A4 (en) * 2016-11-23 2020-06-03 Corit LLC Apparatus and methods for tissue reduction
US10849645B2 (en) 2016-11-23 2020-12-01 Corit Llc Apparatus and methods for tissue reduction
US11826071B2 (en) 2016-11-23 2023-11-28 Corit Medical, Llc Apparatus and methods for tissue reduction
WO2018189774A1 (en) * 2017-04-10 2018-10-18 オリンパス株式会社 Medical system

Also Published As

Publication number Publication date
JPH0557862B2 (en) 1993-08-25

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